Sulfitaufschluß mit organischen Basen

Appendix D Composition of Ascu The composition of Ascu was taken to be that quoted by Raman Parts by weight K2Cr207 — 5 CuSO4 · 5H2O — 3 As2O5 · 2H2O — Water 200 This gives a solution strength of 4^% when calculated as wt. salt/ioo parts by weight of water — the system normally used in commercial practice. The 2j% solution was made by doubling the quantity of water. References Liese, W. and U. Ammer, Über den Befall von Buchenholz durch ModerfäulepiJze in Abhängigkeit von der Holzfeuchtigkeit. Holzforschung. 18 (1964) 4, 97—102. Red ding, L. W., The Resistance of Various Timbers to Impregnation. Forest Prod. Res. report, March 1958. Savory,}. G., Breakdown of Timber by Ascomycetes and Fungi Imperfecti. Ann, appl. Biol. 41 (1954)5 336—347. Smith, D. N., Field Tests on Preservatives used for Pressure Treatment. Forest Prod. Res. Bull. No. 32 (1954).